If money is no object then I'd get the Airbrake because you can get a $60 facemask made to work with the Airbrake. Winter Bandit Face Concealers - Oakley Bandito Mask Shields the Face from Freezing Cold Air
I personally bought the Smith I/O because you can easily find them for $90 or even less sometimes and they come with two lenses. I also already had a Smith helmet so I get a great fit.
2011 Smokin Buck Ferton 155
2013 Flow NX2-SE
2013 Flow Hylite boa
Burton Stagger pants/jacket